纯Cr在750℃熔融LiCl-Li_2O中腐蚀行为  

Corrosion behavior of pure Cr in molten LiCl-Li_2O at 750 ℃

作　　者：王旭[1] 屈献永[1] 张俊善[1] 刘瑞岩[1] 祝美丽[1] 

机构地区：[1]大连理工大学材料工程系,辽宁大连116024

出　　处：《大连理工大学学报》2007年第1期30-33,共4页Journal of Dalian University of Technology

摘　　要：利用锂化还原处理技术处理乏燃料时,形成的L iC l-L i2O混合熔盐将使反应容器和传送装置材料发生强烈的腐蚀.采用浸没法腐蚀实验研究了纯C r在750℃下,不同浓度熔融L iC l-L i2O中的腐蚀行为.实验结果表明,随着L i2O浓度的增加,纯C r在750℃熔融L iC l-L i2O中的腐蚀产物发生了由L iC rO2向L i2C rO4的转变,这与热力学计算得到的相稳定图一致.腐蚀减重随L i2O浓度的升高而增大.Mixed-molten salt LiCl-Li2O formed in the treatment process of spent fuel with lithium reduction technique, which will induce the materials of reactive tank and delivery device to intensive corrosion. The corrosion behavior of pure Cr was studied by immersion experiments in molten LiCl-Li2O with different concentration of Li2O at 750 ℃. The experimental results show that with the increasing of concentration of Li2O, the corrosion products of pure Cr in molten LiCl-Li2O transform from LiCrO2 into li2CrO4 at 750 ℃, which is accordant with thermodynamic phase stability diagram. The weight loss was also increased with the increasing of the concentration of Li2O.

关 键 词：纯Cr LiCl-Li2O 腐蚀 

分 类 号：O614.611[理学—无机化学]